11
7. Power supply
Provide for a sufficient power supply of the system.
a)
The system requires connection to 12 V or 24 V on-board power.
b)
For the connection to the on-board power, the cable diameter must not
be below 2.5 mm
2
. For cable lengths of 6 m or more, use a cross section
of at least 4.0 mm
2
.
c)
In most cases, a connection to the on-board power over existing lines
is not ideal. Often the cable diameter is too low and/or different users,
e.g. the television set, are already being supplied via these lines. The
available voltage is then usually not sufficient.
d)
Recommended and at the same time the optimal solution is to install a
separate on-board power line for the unit to the battery.
The fuse
protection of this line must be between 10 and 20 A
.
Power supply in caravans / trailers
In caravans there is frequently no stable and/or battery backed-up 12 V
board power supply available. In this case it is necessary to supply the
system via a suitable voltage transformer 220 V/12 V from the mains
power net.
Do not use under any circumstances battery chargers, simple
transformers, or non-stabilized power packs. Suitable are exclusively
electronically controlled stabilized power packs with a nominal voltage of
13,8 V and a permanent current load capability of at least 6 A.
We strongly recommend the use of the auxiliary transducer which can be
obtained from us.
After the correct connection of the system to the battery has been
established, the system will perform a self-test.
Should you now see any error messages appearing on the display of the
control device, look up the cause on page 19.
